Considera l'id dell'esame per decidere se pulire l'area o no

bin-ubuntu/get-config

@@ -103,6 +103,7 @@ getConfigVars() {
     MACHINE_ID=`echo $MACHINE_JSON | jsonValue id 1`
     MACHINE_CONFIGS_ID=`echo $MACHINE_JSON | jsonValue configs_id 1`
     CONFIG_NAME=`echo $MACHINE_JSON | jsonValue name 2`
+    EXAM_ID=`echo $MACHINE_JSON | jsonValue examid 1`
 
     if [[ "$CONFIG_NAME" == "" ]]; then
         echo "Error fetching machine configuration!"
@@ -223,6 +224,7 @@ start() {
             rm /local/iptables >/dev/null 2>&1
             rm /local/iptables.prev >/dev/null 2>&1
             rm /local/mk-homedir >/dev/null 2>&1
+            rm /local/examid >/dev/null 2>&1
             /usr/bin/systemctl start graphical && exit 0
         fi
         echo "Fatal error(s): missing or wrong web service reply, abort."
@@ -238,13 +240,13 @@ start() {
                 echo "Reboot to Normal!"
             # reboot => exam
             else
-                echo "Reboot to Exam!"
+                echo "Reboot to Exam (exam id: ${EXAM_ID})"
             fi
             /usr/bin/systemctl reboot
         fi
     else
         # at boot time
-        if [[ "$CONFIG_NAME" != "$CONFIG_NAME_PREV" ]]; then
+        #if [[ "$CONFIG_NAME" != "$CONFIG_NAME_PREV" ]]; then
             # update config_name file
             echo "${CONFIG_NAME}" > /local/config_name
 
@@ -256,10 +258,25 @@ start() {
                 rm /local/iptables >/dev/null 2>&1
                 rm /local/iptables.prev >/dev/null 2>&1
                 rm /local/mk-homedir >/dev/null 2>&1
+                rm /local/examid >/dev/null 2>&1
             else
-                touch /local/mk-homedir
+                # if the examid of the session before the boot is different,
+                # then clean the exam user home (if the profile requires it)
+                EXAM_ID_PREV=""
+                # if the exam is already started, get examid from file
+                if [[ -f /local/examid ]]; then
+                    EXAM_ID_PREV=`cat /local/examid`
+                # otherwise let's create the file with the current examid
+                else
+                    echo "${EXAM_ID}" > /local/examid
+                fi
+
+                # different examid?
+                if [[ ${EXAM_ID} != ${EXAM_ID_PREV} ]]; then
+                    touch /local/mk-homedir
+                fi
             fi
-        fi
+        #fi
         # choose the correct target
         # we have just booted/rebooted, update the current configuration via web service
         updateCurrentConfigId